Fix documentation job for new layout

Author: headius

.github/workflows/documentation.yml

@@ -35,9 +35,16 @@ jobs:
       run: bundle exec rake rdoc:coverage
     - name: Check C coverage
       run: doxygen Doxyfile
+
+    - name: Set up Java
+      uses: actions/setup-java@v5
+      with:
+        distribution: 'temurin'
+        java-version: '21'
+        cache: maven
     - name: Check Java coverage
-      run: javadoc -Xdoclint:all,-missing -d ../doc/java -subpackages *
-      working-directory: java/api
+      run: mvn -f java/pom.xml -pl api -pl native attach-javadocs
+
     - name: Generate Rust documentation
       run: |
         bundle exec rake cargo:build